Purification processing technology of raw oysters

A processing technology and oyster-eating technology, applied in the directions of climate change adaptation, fish farming, and application, can solve the problems of backward shellfish purification, insufficient shellfish vitality, and lack of competitiveness, and achieve high freshness and good market prospects. , the effect of convenient operation

Inactive Publication Date: 2013-01-30
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

my country's shellfish purification is still relatively backward. At present, there are only 5 shellfish purification factories that have formed a large scale in the country. Due to technical deficiencies such as purification equipment and purification processing technology, the purified shellfish generally has insufficient vitality and freshness. problem, there is no obvious competitiveness in the domestic and foreign markets

Method used

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  • Purification processing technology of raw oysters

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Embodiment 1

[0033] According to the technical requirements of the present invention, in a 2 ton / time-scale shellfish purification pilot plant built in Tuandao, Qingdao, Shandong, 20Kg each of pleated oysters, Dalian Bay oysters, Pacific oysters, and dense scale oysters were taken, and they were temporarily raised for 7 days. , and then infect the norovirus-positive stool samples and coliform culture fluid respectively, after 48hr purification, the coliform group was detected by GB4789.3-94, and the norovirus was detected by SN / T2626-2010, and the changes before and after purification were compared , the results showed that the content of coliform bacteria increased by 10 4 -10 5 The MPN / 100g shell meat dropped to 42, and no sediment was detected.

Embodiment 2

[0035] According to the technical requirements of the present invention, in a 5 ton / time scale oyster purification factory built in Zhanjiang, Guangdong, 50Kg of oysters near the river were taken, and after 2 days of temporary cultivation, they were infected with norovirus-positive feces samples and coliform bacteria respectively. The culture medium was purified for 48 hours. The coliform bacteria were detected by GB4789.3-94, and the norovirus was detected by SN / T2626-2010. Compared with the changes before and after purification, the results showed that the coliform bacteria content increased from 2.4×10 5 The MPN / 100g shell meat dropped to 42, and no sediment was detected.

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Abstract

The invention discloses a purification processing technology of raw oysters based on a technology for processing seawater with ozone (O3). The technology is a completely open system and is carried out in a room with the adjustable environmental temperature. The technology is carried out by the following six steps: extracting the natural seawater to preprocess until meeting a technical demand of the water for purifying the oysters; picking and cleaning the oysters, putting the oysters in a basket and then putting into a purification pool; delivering the pre-processed water for purification into an ozone mixer and simultaneously regulating and controlling O3 concentration in the seawater; spraying the seawater with the proper O3 concentration into the purification pool and purify the oysters; discharging the purified seawater after processing and not recycling; and finishing a purification technology process in a batch until the level of pollutants in the oysters reaches a raw food hygienic standard or after purifying in the shortest time of 48 hr. The purification processing technology has the advantages of pollutant fully-removing, strong activity of purified products, simple technology, lower investment and so on.

Description

technical field [0001] The invention relates to a processing technology of raw seafood, more specifically, the invention relates to a purification processing technology of raw oysters. Background technique [0002] my country is the country with the largest production of shellfish farming in the world. According to statistics, in 2010, the output of marine shellfish farming reached more than 12 million tons, accounting for 75% of the total amount of marine aquaculture in my country and 23% of the total national fishery output. It has developed into an industry that has an important impact on the national economy. However, due to the biological characteristics of shellfish, it is very easy to transmit harmful pollutants in the seawater environment to humans through the food chain. At present, the government still lacks an effective technical supervision and guarantee system in terms of safety production and sanitation of seawater shellfish. Eating shellfish is likely to cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 姜朝军乔庆林
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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